You're seeing this page as if you were . The main menu is still yours, though. Exit from immersion
Abdul Nazar KalathingalAN

Abdul Nazar Kalathingal

IT System Support Specialist

€130/day
Lisbon, PT
8-15 years

Average response time: 1 hour

About Abdul Nazar

Microsoft Certified System Administrator with over 11 years of experience supporting and managing IT and OT environments in aluminum, steel manufacturing, and pharmaceutical industries. Proven expertise in datacenter operations, large-scale workstation management, firewalls, hardware infrastructure, and enterprise networking. Proven skilled in Virtualizations, Microsoft Office 365 Administration, Active Directory Management, DHCP, and file storage systems, with a strong focus on IT Cyber security management.

A dedicated and results‑driven IT professional committed to delivering reliable, secure, and efficient technology solutions. Seeking a role within a forward‑thinking organization where my technical expertise, problem‑solving abilities, and continuous improvement mindset can contribute to long‑term growth and operational excellence.

Key Skills

Systems & Infrastructure

Windows Server Administration
Hyper‑V Virtualization
Datacenter Operations & Maintenance
Active Directory Management
DHCP, DNS & Group Policy
File Storage & Backup Administration

Cloud & Productivity Platforms

Microsoft 365 / Office 365 Administration
Exchange Online Management

Networking & Security

Enterprise Networking (LAN/WAN)
Firewall Configuration & Management
Network Monitoring & Troubleshooting
IT Security Best Practices
Access Control & Identity Management

Hardware & Technical Support

Workstation & Laptop Support
Hardware Diagnostics & Maintenance
Peripheral & Device Management
IT Asset Management

Professional Strengths

Strong Analytical & Troubleshooting Skills
High Attention to Detail
Process‑Driven & Documentation‑Focused
Excellent Communication & Team Collaboration
Fast Learner & Adaptable in High‑Demand Environments
  • English

    Native or bilingual

Can work on-site
Lisbon (up to 50km)

Experience

  • Maaden Rolling Company
    System Support Specialist
    TECH
    January 2022 - Today (4 years and 5 months)
    Ras Tannurah, SH, Saudi Arabia
    • Administrating and managing Datacenter servers and workstations in OT environment.
    • Handling VMware ESXi 7.0 virtualization environment.
    • Expertise on Windows Server 2008/2012/2016/2019 and Active Directory Administration
    • Hands-on experience in managing and creating Group Policy Objects.
    • Extensive experience in Windows WSUS patch Management and vulnerability assessment.
    • Working experience on SCCM.
    • Managing data backups/Restore (DRS) on Acronis Cyber Protect, Symantec Exec and Veeam Backup.
    • Proven experience on BitLocker encryption to protect organizational data.
    • VPN support for remote users
    • Specialized in managing Symantec Antivirus and ESET Antivirus centralized system and endpoints.
    • Creating and managing users and computers on Active Directory, Maintaining DNS zones and DHCP scopes, Printer server, IIS Server.
    • Managing Synology NAS File Storage.
    • Daily monitoring and checking up Servers health and performance and maintain logs in the checklist.
    • Installing and configuring new and existing computer hardware, operating systems, and applications.
    • Working and acting on IT ticketing system using ServiceNow based on SLA.
    • Configure and maintain security, door access and camera system.
    • Supporting end users for all kind of IT issues via phone, remotely and visiting the place in person on SLA.
    • Keep maintaining SWI’s document for OT.
    • Assisting Cybersecurity team to collect necessary evidence and updating the required information from OT environment.
    • Setting up and maintain employee laptops, Desktop, and printers.
    • Keep all internal Digital & IT systems up to date, ICT Assets and Licenses, Service Catalogues
    • Assist in helping to ensure security protocols and procedures are being adhered to prevent potential threats.
    • On-site and remote analysis, diagnosis, and resolution of complex desktop problems for end-users, along with recommending and implementation of corrective solutions for systems.
    VMWARE WSUS Patch Management & Vulnerability Remediation ICT IT Service Desk Operations (ServiceNow, SLA‑Driven Support Windows Server 2016/2019/2022 and 2025 Administration
  • Gulf Specialized Works
    IT System Administrator
    ENERGY AND UTILITIES
    January 2015 - January 2021 (6 years)
    • Administrating, maintaining, and troubleshooting physical and virtual servers.
    • Daily monitoring and checking up Servers health and performance.
    • Administrating Office 365 Management Center
    • Hands on experience on Sophos firewall and ensuring Network traffics and monitoring on daily basis Administrating ESET ERA Antivirus server.
    • Enforce security policy and software distribution by means of Active Directory Group Policy
    • Maintain integrity of the network and identify manage risk in IT infrastructure.
    • Experience on data backup in Symantec Backup 2015 / Veritas and Novastor
    • Managing NAS storage and Synology storage. Good skills on Active Directory, DHCP, DNS, WSUS,
    • Printer servers, Citrix, Employees Attendance System and Access control
    • Specially working on ESET Safetica Data Loss Prevention solution. Creating and updated network shares, adding permissions to folders, software, and groups for users through Active Directory
    • Proactively assisting with help desk / service desk duties, supporting printers, hardware, software, and related technical issues.
    • Installation and Configuration of Operating Systems on Desktops and all other essential software
    • Configuration and setup of Hardware such Servers, PC, Network Printers, Detecting, diagnosing, and correcting computer hardware, software, and peripheral errors.
    • Keep track of the entire H/W and S/W inventory.
    • Troubleshooting network connectivity and server issues.
    • Installed and Configure Operating Systems on Desktops and other business-related software.
    • Configured, Setup and troubleshoot of Outlook.
    • Managing Data backup and recovery of users’ data (Daily, Weekly, Monthly)
    • Planned and scheduled preventive maintenance of PCs and peripherals.
    • Created and maintained VPN access for authorized staff members and guest users.
    • Support and maintenance Steel Office Server, PSQL and CNC machines of production area in factor
    Office 365 Admin Center Managing Citrix, Printer Servers, Employee Attendance Systems, and Access Control Hands‑on experience with Sophos Firewall VPN Data backup and recovery using Symantec Backup/Veritas, NovaStor

Recommendations

Be the first to recommend Abdul Nazar

Help this freelancer shine by sharing your experience working together.

These freelancer profiles also match your criteria

AgathaA

Agatha Frydrych

Backend Java Software Engineer

4.7

(3)

2

BaptisteB

Baptiste Duhen

Fullstack developer

4.6

(4)

5

AmedA

Amed Hamou

Senior Lead Developer

4

(2)

7

AudreyA

Audrey Champion

Web developer

4.3

(3)

4

Education

  • Diploma in Information Technology
    IIE
    2009
    Diploma in Information Technology

Skill set

Categories